1 files changed, 28 insertions, 0 deletions
diff --git a/pkgs/tools/networking/lychee/tests/fail-emptyDirectory.nix b/pkgs/tools/networking/lychee/tests/fail-emptyDirectory.nix
new file mode 100644
index 0000000000000..9db4b23b1bc96
--- /dev/null
+++ b/pkgs/tools/networking/lychee/tests/fail-emptyDirectory.nix
@@ -0,0 +1,28 @@
+{ runCommand, testers, emptyDirectory }:
+let
+  sitePkg = runCommand "site" { } ''
+    dist=$out/dist
+    mkdir -p $dist
+    echo "<html><body><a href=\"https://example.com/foo\">foo</a></body></html>" > $dist/index.html
+    echo "<html><body></body></html>" > $dist/foo.html
+  '';
+  check = testers.lycheeLinkCheck {
+    site = sitePkg + "/dist";
+    remap = {
+      # Normally would recommend to append a subpath that hints why it's forbidden; see example in docs.
+      # However, we also want to test that a package is converted to a string *before*
+      # it's tested whether it's a store path. Mistake made during development caused:
+      # cannot check URI: InvalidUrlRemap("The remapping pattern must produce a valid URL, but it is not: /nix/store/4d0ix...empty-directory/foo
+      "https://example.com" = emptyDirectory;
+    };
+  };
+
+  failure = testers.testBuildFailure check;
+in
+  runCommand "link-check-fail" { inherit failure; } ''
+    # The details of the message might change, but we have to make sure the
+    # correct error is reported, so that we know it's not something else that
+    # went wrong.
+    grep 'empty-directory/foo.*Cannot find file' $failure/testBuildFailure.log >/dev/null
+    touch $out
+  ''